INFO: task syz-executor:4328 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:4328 ppid:1 flags:0x00000009 Call trace: __switch_to+0x2f4/0x550 arch/arm64/kernel/process.c:555 context_switch kernel/sched/core.c:5246 [inline] __schedule+0xdb4/0x1a6c kernel/sched/core.c:6563 schedule+0xc4/0x170 kernel/sched/core.c:6639 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6698 __mutex_lock_common+0xb20/0x1f3c kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 nfsd_shutdown_threads+0x60/0x204 fs/nfsd/nfssvc.c:633 nfsd_umount+0x48/0xf8 fs/nfsd/nfsctl.c:1409 deactivate_locked_super+0xb4/0x128 fs/super.c:332 deactivate_super+0xe4/0x104 fs/super.c:363 cleanup_mnt+0x3a8/0x430 fs/namespace.c:1191 __cleanup_mnt+0x20/0x30 fs/namespace.c:1198 task_work_run+0x1f4/0x280 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x20f8/0x2c84 arch/arm64/kernel/signal.c:1151 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x98/0x128 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 INFO: task syz-executor:4329 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:4329 ppid:1 flags:0x00000009 Call trace: __switch_to+0x2f4/0x550 arch/arm64/kernel/process.c:555 context_switch kernel/sched/core.c:5246 [inline] __schedule+0xdb4/0x1a6c kernel/sched/core.c:6563 schedule+0xc4/0x170 kernel/sched/core.c:6639 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6698 __mutex_lock_common+0xb20/0x1f3c kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 nfsd_shutdown_threads+0x60/0x204 fs/nfsd/nfssvc.c:633 nfsd_umount+0x48/0xf8 fs/nfsd/nfsctl.c:1409 deactivate_locked_super+0xb4/0x128 fs/super.c:332 deactivate_super+0xe4/0x104 fs/super.c:363 cleanup_mnt+0x3a8/0x430 fs/namespace.c:1191 __cleanup_mnt+0x20/0x30 fs/namespace.c:1198 task_work_run+0x1f4/0x280 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x20f8/0x2c84 arch/arm64/kernel/signal.c:1151 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x98/0x128 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 INFO: task syz-executor:4333 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:4333 ppid:1 flags:0x00000009 Call trace: __switch_to+0x2f4/0x550 arch/arm64/kernel/process.c:555 context_switch kernel/sched/core.c:5246 [inline] __schedule+0xdb4/0x1a6c kernel/sched/core.c:6563 schedule+0xc4/0x170 kernel/sched/core.c:6639 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6698 __mutex_lock_common+0xb20/0x1f3c kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 nfsd_shutdown_threads+0x60/0x204 fs/nfsd/nfssvc.c:633 nfsd_umount+0x48/0xf8 fs/nfsd/nfsctl.c:1409 deactivate_locked_super+0xb4/0x128 fs/super.c:332 deactivate_super+0xe4/0x104 fs/super.c:363 cleanup_mnt+0x3a8/0x430 fs/namespace.c:1191 __cleanup_mnt+0x20/0x30 fs/namespace.c:1198 task_work_run+0x1f4/0x280 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x20f8/0x2c84 arch/arm64/kernel/signal.c:1151 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x98/0x128 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 INFO: task syz.4.106:5077 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.4.106 state:D stack:0 pid:5077 ppid:4342 flags:0x00000001 Call trace: __switch_to+0x2f4/0x550 arch/arm64/kernel/process.c:555 context_switch kernel/sched/core.c:5246 [inline] __schedule+0xdb4/0x1a6c kernel/sched/core.c:6563 schedule+0xc4/0x170 kernel/sched/core.c:6639 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6698 __mutex_lock_common+0xb20/0x1f3c kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 write_versions+0xa4/0xa34 fs/nfsd/nfsctl.c:681 nfsctl_transaction_write+0x114/0x164 fs/nfsd/nfsctl.c:114 vfs_write+0x2a8/0x7c8 fs/read_write.c:582 ksys_write+0x12c/0x228 fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [inline] __se_sys_write fs/read_write.c:646 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:646 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 INFO: task syz.4.106:5078 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.4.106 state:D stack:0 pid:5078 ppid:4342 flags:0x00000001 Call trace: __switch_to+0x2f4/0x550 arch/arm64/kernel/process.c:555 context_switch kernel/sched/core.c:5246 [inline] __schedule+0xdb4/0x1a6c kernel/sched/core.c:6563 schedule+0xc4/0x170 kernel/sched/core.c:6639 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6698 __mutex_lock_common+0xb20/0x1f3c kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 write_ports+0xbc/0x9f0 fs/nfsd/nfsctl.c:846 nfsctl_transaction_write+0x114/0x164 fs/nfsd/nfsctl.c:114 vfs_write+0x2a8/0x7c8 fs/read_write.c:582 ksys_write+0x12c/0x228 fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [inline] __se_sys_write fs/read_write.c:646 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:646 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 INFO: task syz.4.106:5079 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.4.106 state:D stack:0 pid:5079 ppid:4342 flags:0x00000001 Call trace: __switch_to+0x2f4/0x550 arch/arm64/kernel/process.c:555 context_switch kernel/sched/core.c:5246 [inline] __schedule+0xdb4/0x1a6c kernel/sched/core.c:6563 schedule+0xc4/0x170 kernel/sched/core.c:6639 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6698 __mutex_lock_common+0xb20/0x1f3c kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 nfsd_svc+0x74/0x948 fs/nfsd/nfssvc.c:783 write_threads+0x2b4/0x310 fs/nfsd/nfsctl.c:424 nfsctl_transaction_write+0x114/0x164 fs/nfsd/nfsctl.c:114 vfs_write+0x2a8/0x7c8 fs/read_write.c:582 ksys_write+0x12c/0x228 fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [inline] __se_sys_write fs/read_write.c:646 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:646 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Showing all locks held in the system: 3 locks held by kworker/u4:0/9: #0: ffff0000c0029138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x69c/0x13bc kernel/workqueue.c:-1 #1: ffff80001cb77c40 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x6e8/0x13bc kernel/workqueue.c:2267 #2: ffff800017a3ebc8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74 1 lock held by rcu_tasks_kthre/12: #0: ffff800015597db0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x40/0xc48 kernel/rcu/tasks.h:517 1 lock held by rcu_tasks_trace/13: #0: ffff8000155985d0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x40/0xc48 kernel/rcu/tasks.h:517 1 lock held by khungtaskd/28: #0: ffff800015597440 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:349 3 locks held by kworker/0:3/3901: #0: ffff0000d5f65538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x69c/0x13bc kernel/workqueue.c:-1 #1: ffff800024c87c40 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6e8/0x13bc kernel/workqueue.c:2267 #2: ffff800017a3ebc8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74 2 locks held by getty/4083: #0: ffff0000d8dc0098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff800020a9e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x2e8/0xfa8 drivers/tty/n_tty.c:2198 2 locks held by syz-executor/4328: #0: ffff0000ddec20e0 (&type->s_umount_key#48){+.+.}-{3:3}, at: deactivate_super+0xdc/0x104 fs/super.c:362 #1: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_shutdown_threads+0x60/0x204 fs/nfsd/nfssvc.c:633 2 locks held by syz-executor/4329: #0: ffff0000d9c980e0 (&type->s_umount_key#48){+.+.}-{3:3}, at: deactivate_super+0xdc/0x104 fs/super.c:362 #1: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_shutdown_threads+0x60/0x204 fs/nfsd/nfssvc.c:633 2 locks held by syz-executor/4333: #0: ffff0000df2ac0e0 (&type->s_umount_key#48){+.+.}-{3:3}, at: deactivate_super+0xdc/0x104 fs/super.c:362 #1: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_shutdown_threads+0x60/0x204 fs/nfsd/nfssvc.c:633 3 locks held by kworker/u4:5/4356: 2 locks held by kworker/0:4/4375: #0: ffff0000c0020938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x69c/0x13bc kernel/workqueue.c:-1 #1: ffff800021297c40 (free_ipc_work){+.+.}-{0:0}, at: process_one_work+0x6e8/0x13bc kernel/workqueue.c:2267 3 locks held by kworker/1:4/4377: #0: ffff0000c0020938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x69c/0x13bc kernel/workqueue.c:-1 #1: ffff8000212b7c40 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x6e8/0x13bc kernel/workqueue.c:2267 #2: ffff000129473240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x1d8/0x2708 drivers/net/netdevsim/fib.c:1491 2 locks held by kworker/1:5/4378: #0: ffff0000c0021938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x69c/0x13bc kernel/workqueue.c:-1 #1: ffff8000212c7c40 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x6e8/0x13bc kernel/workqueue.c:2267 3 locks held by kworker/0:6/4379: #0: ffff0000c0020938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x69c/0x13bc kernel/workqueue.c:-1 #1: ffff8000212d7c40 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x6e8/0x13bc kernel/workqueue.c:2267 #2: ffff0000ca4d7240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x1d8/0x2708 drivers/net/netdevsim/fib.c:1491 3 locks held by kworker/0:7/4380: #0: ffff0000c0020938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x69c/0x13bc kernel/workqueue.c:-1 #1: ffff8000212e7c40 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x6e8/0x13bc kernel/workqueue.c:2267 #2: ffff0000f3130240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x1d8/0x2708 drivers/net/netdevsim/fib.c:1491 3 locks held by kworker/1:6/4412: #0: ffff0000d5f65538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x69c/0x13bc kernel/workqueue.c:-1 #1: ffff8000213e7c40 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6e8/0x13bc kernel/workqueue.c:2267 #2: ffff800017a3ebc8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74 3 locks held by syz.3.93/4954: #0: ffff0000d0222368 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0000d5b30460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_ports+0xbc/0x9f0 fs/nfsd/nfsctl.c:846 3 locks held by syz.4.106/5077: #0: ffff0000da51b9e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0000c3e08460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_versions+0xa4/0xa34 fs/nfsd/nfsctl.c:681 3 locks held by syz.4.106/5078: #0: ffff0000da51ad68 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0000c3e08460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_ports+0xbc/0x9f0 fs/nfsd/nfsctl.c:846 3 locks held by syz.4.106/5079: #0: ffff0000d0c3eae8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0000c3e08460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_svc+0x74/0x948 fs/nfsd/nfssvc.c:783 2 locks held by syz-executor/5086: #0: ffff0000d43020e0 (&type->s_umount_key#48){+.+.}-{3:3}, at: deactivate_super+0xdc/0x104 fs/super.c:362 #1: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_shutdown_threads+0x60/0x204 fs/nfsd/nfssvc.c:633 2 locks held by syz.8.131/5313: #0: ffff0000cecfaae8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_versions+0xa4/0xa34 fs/nfsd/nfsctl.c:681 3 locks held by syz.7.137/5362: #0: ffff0000f70a60e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0000df624460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_svc+0x74/0x948 fs/nfsd/nfssvc.c:783 3 locks held by syz.9.121/5365: #0: ffff0000f70a6368 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0000df54c460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_versions+0xa4/0xa34 fs/nfsd/nfsctl.c:681 3 locks held by syz.9.121/5372: #0: ffff0000d9db2d68 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0000df54c460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_ports+0xbc/0x9f0 fs/nfsd/nfsctl.c:846 3 locks held by syz.9.121/5375: #0: ffff0000de6beae8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0000df54c460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_svc+0x74/0x948 fs/nfsd/nfssvc.c:783 3 locks held by syz.5.162/5492: #0: ffff0000d25e4368 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0000c4f66460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_ports+0xbc/0x9f0 fs/nfsd/nfsctl.c:846 3 locks held by syz.5.162/5495: #0: ffff0000ca5625e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0000c4f66460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_svc+0x74/0x948 fs/nfsd/nfssvc.c:783 3 locks held by syz.2.175/5601: #0: ffff00011acc94e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff00010b158460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_ports+0xbc/0x9f0 fs/nfsd/nfsctl.c:846 3 locks held by syz.0.176/5605: #0: ffff00011adeb4e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff00010b382460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_versions+0xa4/0xa34 fs/nfsd/nfsctl.c:681 3 locks held by syz.0.176/5611: #0: ffff00011af39268 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff00010b382460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_ports+0xbc/0x9f0 fs/nfsd/nfsctl.c:846 3 locks held by syz.0.176/5616: #0: ffff00011afd8d68 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff00010b382460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_svc+0x74/0x948 fs/nfsd/nfssvc.c:783 3 locks held by syz.3.177/5624: #0: ffff00011b8d59e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0001046e4460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_versions+0xa4/0xa34 fs/nfsd/nfsctl.c:681 3 locks held by syz.3.177/5627: #0: ffff00011b9699e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0001046e4460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_svc+0x74/0x948 fs/nfsd/nfssvc.c:783 3 locks held by syz.1.166/5640: #0: ffff0000dac714e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0000c39ce460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_versions+0xa4/0xa34 fs/nfsd/nfsctl.c:681 3 locks held by syz.1.166/5641: #0: ffff0000cfc1f4e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0000c39ce460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_ports+0xbc/0x9f0 fs/nfsd/nfsctl.c:846 3 locks held by syz.1.166/5642: #0: ffff0000cfc1e868 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0000c39ce460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_svc+0x74/0x948 fs/nfsd/nfssvc.c:783 3 locks held by syz.4.213/5838: #0: ffff00011af04ae8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff00010b872460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_versions+0xa4/0xa34 fs/nfsd/nfsctl.c:681 3 locks held by syz.4.213/5839: #0: ffff00011ae0fc68 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff00010b872460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_ports+0xbc/0x9f0 fs/nfsd/nfsctl.c:846 3 locks held by syz.4.213/5840: #0: ffff00011ae8afe8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff00010b872460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_svc+0x74/0x948 fs/nfsd/nfssvc.c:783 3 locks held by syz.9.216/5935: #0: ffff00012a7c1768 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0000f2e18460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_versions+0xa4/0xa34 fs/nfsd/nfsctl.c:681 3 locks held by syz.5.219/5944: #0: ffff00012a7d5768 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0000daf3c460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_versions+0xa4/0xa34 fs/nfsd/nfsctl.c:681 1 lock held by syz.5.219/5952: #0: ffff00012a7d5768 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 2 locks held by syz-executor/5956: #0: ffff00010bbc20e0 (&type->s_umount_key#48){+.+.}-{3:3}, at: deactivate_super+0xdc/0x104 fs/super.c:362 #1: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_shutdown_threads+0x60/0x204 fs/nfsd/nfssvc.c:633 3 locks held by syz.8.226/5970: #0: ffff0000ced265e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0000f9f0c460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_versions+0xa4/0xa34 fs/nfsd/nfsctl.c:681 3 locks held by syz.8.226/5971: #0: ffff00011c342fe8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0000f9f0c460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_ports+0xbc/0x9f0 fs/nfsd/nfsctl.c:846 3 locks held by syz.8.226/5972: #0: ffff0000ced27268 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0000f9f0c460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_svc+0x74/0x948 fs/nfsd/nfssvc.c:783 3 locks held by syz.7.227/5978: #0: ffff00011ae40d68 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0000fcf66460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_ports+0xbc/0x9f0 fs/nfsd/nfsctl.c:846 3 locks held by syz.7.227/5980: #0: ffff00011b8d45e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0000fcf66460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_svc+0x74/0x948 fs/nfsd/nfssvc.c:783 2 locks held by syz-executor/6331: #0: ffff00013c3220e0 (&type->s_umount_key#48){+.+.}-{3:3}, at: deactivate_super+0xdc/0x104 fs/super.c:362 #1: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_shutdown_threads+0x60/0x204 fs/nfsd/nfssvc.c:633 3 locks held by syz.1.299/6468: #0: ffff00011bff25e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff00011da90460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_ports+0xbc/0x9f0 fs/nfsd/nfsctl.c:846 3 locks held by syz.1.299/6474: #0: ffff00012a5e2fe8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff00011da90460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_svc+0x74/0x948 fs/nfsd/nfssvc.c:783 3 locks held by syz.2.319/6578: #0: ffff00012efa20e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff00010a6f8460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_ports+0xbc/0x9f0 fs/nfsd/nfsctl.c:846 3 locks held by syz.2.319/6586: #0: ffff0000d25bc0e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff00010a6f8460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_svc+0x74/0x948 fs/nfsd/nfssvc.c:783 3 locks held by syz.0.327/6689: #0: ffff0000cc6d5c68 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0000dbb80460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_ports+0xbc/0x9f0 fs/nfsd/nfsctl.c:846 3 locks held by syz.0.327/6691: #0: ffff00011a0b8868 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0000dbb80460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_svc+0x74/0x948 fs/nfsd/nfssvc.c:783 3 locks held by syz.4.329/6698: #0: ffff00011c0699e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0001415d8460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_ports+0xbc/0x9f0 fs/nfsd/nfsctl.c:846 3 locks held by syz.4.329/6699: #0: ffff00011c1b5768 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0001415d8460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_versions+0xa4/0xa34 fs/nfsd/nfsctl.c:681 3 locks held by syz.4.329/6700: #0: ffff00011c1b54e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0001415d8460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_svc+0x74/0x948 fs/nfsd/nfssvc.c:783 3 locks held by syz.8.380/7035: #0: ffff00011c7760e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff00010ac50460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_svc+0x74/0x948 fs/nfsd/nfssvc.c:783 3 locks held by syz.9.393/7077: #0: ffff0000d9ac2fe8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0000f06c8460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_versions+0xa4/0xa34 fs/nfsd/nfsctl.c:681 3 locks held by syz.5.395/7081: #0: ffff0000cfc1e368 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0001455ee460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_versions+0xa4/0xa34 fs/nfsd/nfsctl.c:681 3 locks held by syz.5.395/7082: #0: ffff0000cfc1ed68 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0001455ee460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_ports+0xbc/0x9f0 fs/nfsd/nfsctl.c:846 3 locks held by syz.5.395/7083: #0: ffff0000d8f72368 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0001455ee460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_svc+0x74/0x948 fs/nfsd/nfssvc.c:783 3 locks held by syz.7.410/7218: #0: ffff000132080d68 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff000141632460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_versions+0xa4/0xa34 fs/nfsd/nfsctl.c:681 3 locks held by syz.7.410/7225: #0: ffff00012ef625e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff000141632460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_ports+0xbc/0x9f0 fs/nfsd/nfsctl.c:846 3 locks held by syz.7.410/7233: #0: ffff00011c0ab9e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff000141632460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_svc+0x74/0x948 fs/nfsd/nfssvc.c:783 3 locks held by syz.1.461/7508: #0: ffff0000d57525e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff00011d9a8460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_versions+0xa4/0xa34 fs/nfsd/nfsctl.c:681 3 locks held by syz.1.461/7509: #0: ffff0001323f2fe8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff00011d9a8460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_ports+0xbc/0x9f0 fs/nfsd/nfsctl.c:846 3 locks held by syz.1.461/7510: #0: ffff00012f046868 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff00011d9a8460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_pool_threads+0x124/0x534 fs/nfsd/nfsctl.c:468 3 locks held by syz.6.469/7553: #0: ffff00011c2abc68 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff00014140a460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_versions+0xa4/0xa34 fs/nfsd/nfsctl.c:681 3 locks held by syz.6.469/7558: #0: ffff00015325b768 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff00014140a460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_ports+0xbc/0x9f0 fs/nfsd/nfsctl.c:846 3 locks held by syz.6.469/7564: #0: ffff0000fd09aae8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff00014140a460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_svc+0x74/0x948 fs/nfsd/nfssvc.c:783 3 locks held by syz.2.477/7634: #0: ffff00011c5f25e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff000132bfe460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_ports+0xbc/0x9f0 fs/nfsd/nfsctl.c:846 3 locks held by syz.0.466/7650: #0: ffff0000cfd11268 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff000158716460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_svc+0x74/0x948 fs/nfsd/nfssvc.c:783 3 locks held by syz.3.482/7657: #0: ffff0000d8cc05e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0001485a4460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_versions+0xa4/0xa34 fs/nfsd/nfsctl.c:681 3 locks held by syz.8.500/7785: #0: ffff0001760059e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff00016a2cc460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_versions+0xa4/0xa34 fs/nfsd/nfsctl.c:681 3 locks held by syz.8.500/7787: #0: ffff0001760bcd68 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff00016a2cc460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_ports+0xbc/0x9f0 fs/nfsd/nfsctl.c:846 3 locks held by syz.8.500/7790: #0: ffff00017605dc68 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff00016a2cc460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_svc+0x74/0x948 fs/nfsd/nfssvc.c:783 3 locks held by syz.4.518/7934: #0: ffff00012a7d59e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff0001699e0460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_ports+0xbc/0x9f0 fs/nfsd/nfsctl.c:846 2 locks held by syz.4.518/7942: #0: ffff00011b9fa5e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_ports+0xbc/0x9f0 fs/nfsd/nfsctl.c:846 3 locks held by syz.9.520/7939: #0: ffff00011c068d68 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff000169f1a460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: write_versions+0xa4/0xa34 fs/nfsd/nfsctl.c:681 3 locks held by syz.9.520/7945: #0: ffff0000db01cd68 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x17c fs/file.c:1038 #1: ffff000169f1a460 (sb_writers#12){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580 #2: ffff8000158242c8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_svc+0x74/0x948 fs/nfsd/nfssvc.c:783 3 locks held by syz.7.534/7990: #0: ffff0001296f11e0 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close net/bluetooth/hci_core.c:521 [inline] #0: ffff0001296f11e0 (&hdev->req_lock){+.+.}-{3:3}, at: hci_unregister_dev+0x204/0x4c8 net/bluetooth/hci_core.c:2718 #1: ffff0001296f0428 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x448/0xff0 net/bluetooth/hci_sync.c:5300 #2: ffff800017b94328 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:1833 [inline] #2: ffff800017b94328 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xb0/0x26c net/bluetooth/hci_conn.c:2563 2 locks held by syz.5.538/8001: #0: ffff800017a3ebc8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74 #1: ffff80001559d0f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline] #1: ffff80001559d0f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x2b4/0x780 kernel/rcu/tree_exp.h:962 =============================================